How to pass param/context to copy data transform of "Create Case" shape

As below image

We are not allowed to input any param to the “Data Transform” in red underlined.

My scenario:

In a “parent case”, I use “split for each” based on a page list to trigger a few parallel flows, and, in each of the parallel flow, I use above shape to create a new spinoff case.

In each of created new spinoff case, I want to copy one of the page in the page list which is the context of one of the parallel flow that creates this spinoff case.

How can I do that? Thanks.

@MaxonL16591286

found a solution: before the “Create Case” step in the split for each flow, add a param, e.g. param.P1, to one property of current context (one page in the page list), more param and more properties can be added if needed.

Then, in the copy data transform, accept the params by defining them in para list